Joseph moseley and benjamin blundstone



(No Model.)

J. MOSELEY & B. BLUNDSTONEL ENGINE PAGKING.

No. 425,042. Patented Apr. 8, 1890.

TH: Nunmlwrens co., Pumu'mo., wAsnmm'oN, n. c.

UNITED STATES PATENT OFFICE.

JOSEPH MOSELEY AND BENJAMIN BLUNDSTONE, OF MANCHESTER, COUNTY OFLANCASTER, ENGLAND.

ENGINE-PACKING.

SPECIFICATION forming part of Letters Patent No. 425,042, dated April 8,1890.

Application filed August 14, 1889. Serial No. 320,732. (No model.)Patented in England February 28, 1889, No. 3,567. and

March l2, 1889,11'0. 4,276.

T0 @ZZ whom it may concern:

Be it known that we, JOSEPH MosELEv and BENJAMIN BLUNDsToNE, citizens ofthe United Kingdom of Great Britain and Ireland, and residents of thecity of Manchester, in the county of Lancaster, England, have inventedcertain new and useful Improvements in Engine-Packings, (for which wehave obtained Letters Patent in Great Britain No. 3,567, dated February28, 1889, and No. 4,276, dated March 12, 1889,) of which the followingis a specification.

This invention relates to engine-packings; and these improvementsconsist in the combination and arrangement in the packing' of a metallicgauze element in such a manner as to preserve the flexibility andpliability of the packing, While at the saine time the firmness anddurability due to the metallic element are secured tothe fullest extent.

In order that our invention may be more readily understood, We willproceed to describe it with reference to the accompanying drawings, inwhich- Figure I represents a plain sheet of metallic gauze; Fig. 2, asimilar sheet in preparation for use in the construction of the packing,and Figs. 3, 4, 5, 6,7, and 8 variousforms of packing constructedaccording to this invention.

In each of the figures in Which the parts are represented, a is themetallic gauze. h is the outer layer or covering of the packing. c isthe layer or layers of fabric used in coinbination with the metallicgauze, and d is a strip or core of india-rubber or. similar or suitablematerial.

The metallic gauze is first prepared by grooving, corrugating, orindenting it by rollers or other suitable means, and by preferenceparallel either with the warp or with the weft. The corrugated groove orindented sheet of metallic gauze is then cut diagonally or inbias, asindicatedin Fig. 2, into strips of suoli a width as may be required.These strips are used in the manufacture of the packing in addition toor in substitution for some of the layers or plies of asbestus or othersuitable fabric ordinarily employed.

In the packing represented in Fig. 3 a strip so of the corrugated,indented, or grooved metallic gauze cut from the sheet, as hereiubeforedescribed, is doubled with a strip of asbestus or other similar andsuitable fabric, and the doubled material is then folded and refoldeduntil the desired dimension is obtained. The packing is then envelopedin a covering of a fabric b, such as is ordinarily used for the purposein the manufacture of known packings.

In the packing represented in Fig. i alternate strips of suitabletextile fabric and of the prepared metallic gauze are cemented togetherin alternate layers. The strips thus secured together may be surroundedon three sides by a covering b of suitable textile material, so as toleave exposed the alternate edges of the metallic gauze and textilematerial along one edge. As shown in the drawings, a strip ofindia-rubber d is added to the 7o composite strips before 'the coveringY) is cemented on.

In constructing the packing represented in Fig. 5 we may first double orcement together a strip of the prepared metallic gauze and a 7 5 similarstrip of textile fabric and roll them together, as represented in Fig.8. This roll is then by suitable dies or other known means compressedinto a square or prismatic form, and the packing is finally completed,as here- 8o inbefore described with reference to Fig. 1i.

In this form of packing, Fig. 5, the prepared metallic gauze forms theoutside of the roll, and when therefore the packing is finished themetallic gauze is exposed on the wearing, surface, as indicated at a inthe figure..

The packing illustrated by Fig. 6 resembles that shown in Fig. 3, exceptthat a strip of india-rubber d is included thereon.

The circular packings, Figs. 7 and 8, are 9o made by double strips ofthe prepared metallic gauze and of suitable textile fabric rolledtogether. As indicated in Fig. 7, a core of india-rubber is included inthe packing.

The prepared metallic gauze and the textile fabric may, when required,be doubled or secured together by cement or by other suitable means in asimilar manner to that at present adopted for securing the differentlayers together in similar packings of ordinary construction.

It will be obvious that since the metallic gauze .is so prepared thatthe corrugations, in-

dentations, and grooves are diagonal in the strips which are employed inthe construct ion they will also be diagonal (or spiral, if rolled) inthe finished pac-king.

It is preferred to make the eorrngations, grooves, and indentationscomparatively small and close together. No precise dimen sions need tobe observed; but it the corrugations are about onel1alt millimeter deepand two millimeters apart for ordinary packing-s a very good resultivillbe obtained. Other greater or less dimensions may be used when desired,or for larger or smaller paekings than the average.

The iinilentations iliade in the metallic gauze may be so acute as tonearly or com pletely sever the gauze into tapes or ribbons. In thisease we interrupt the acute indentations at inter 'als so that thesevered or nearly severed portions may be held together at the pointswhere the indentatimls are interrupted. A piece ol. metallic gauzeprepared with these acute indentations is represented in lfig. El, wherethe vertical broken lines represent the interrupted imlentations and thediagonals represent the lines along which the acutely-indented gauze iscut into strips to be used in the manufacture of the packing. Theinterruptions between the acute indentations are at such frequentintervals that there shall at least be one such interruption in eachline of indentation between eaeh diagonal cut. lVhen this precaution istaken7 the strip severed from the sheet by any diagonal eut will be heldtogether by the parts which are not acutely indented or ineised.

rllhe corrugation otl the metallic gauze on the line ot` the Warp or*vveti't and the diagonal cutting give to the packing when completed ahigh degree ot' elasticity and pliability and great: durability.

The forms of the packings illustrated by the accompanying dra-wings arewell known, and we therefore do not claim them apart from thearr.uigement therein and the hereinbeforealeseribed combinationtherewith of the prepared metallic gauze. '.lhe types illustrated arethose of the paekings at present more generally in use, and they havebeen selected for illustration for this reason only; but our inventionmaybe applied to other Vforms and types of pac-,kings with equaladvantage, and \ve desire it to be therefore understood that \ve do notlimit our invention to the types and formsot packings illustrated by thedrawings.

Having now particularly described and ascertained the nature of our saidinvention and in what. manner the same is to be performed, we declarethat what we claim is* l. In engine-packings, the combination andarrangement of a layer or layers of textile `fabric with a layer orlayers ot" metallic gauze preyiared by beingcorrugated, indented, orgrooved, and cut diagonally into strips, substantialIy` as hereinbeforedescribed.

2, ln engiiie-pzwliiiigs, a layer or layers, ply or plies, ot' metallicgauze ln'eliared by being corrugated, indented, or grooved, and arrangedin the packing in such a n'ianner that the corrugations, indentations,and grooves are in a .spiral` Vor diagonal. direction, substantially ashereinbet'ore described.

.ln testimony that we claim the foregoing as our invention ive havesigned our names in presence ot' two witnesses.

JOSEPH 1l( )SIIL'ICX BENJAMIN BLIINDS'IONE.

Witnesses:

lton'r. lll'A'rmEsoN, Wn. IC. IIA vs

